(OT) RPM's not returning to idle

[Timothy Linke]

Hi,

I would first check that the idle wasnt turned way up to compensase for
poor idling. I am extremely good with carbs and you are on the right track
with your thoughts, the next thing I would check is a sync.

On Thu, Sep 8, 2016 at 1:04 PM, William K Denton <wkdenton at verizon.net>
wrote:

> Hi all,
>
> Sorry for the OT, but I'm trying to help out a relative. My cousin is
> looking at buying a used bike, a 2007 Suzuki GS500F. The bike is pristine
> cosmetically and has 987 miles, which mean it sat for 8 of the last 9 years
> before getting traded in to a local dealer. My cousin's brother test rode
> it
> yesterday and reported back to me that it wasn't returning to idle speed,
> sticking up around 4K RPM. It was also stalling and generally running
> rough,
> in fact he had to push it around 100 yds back to the dealer after it
> stalled
> and wouldn't start.
>
> Dealer added some fresh gas and the bike ran better, but the RPM's were
> still not returning to idle when he cut the throttle.
>
> I'm looking for experience based opinions to anyone out there who's had a
> similar issue and solved it. I'm thinking it might be any of the following:
>
> vacuum leak
> carb synch issue
> sticky throttle bodies
>
> ... but if you have any other ideas as to what may be causing this issue,
> I'd appreciate the words. TIA as always...
>
> Bill in Yardley, PA
> wkdenton at verizon.net
>
>
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